Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ConstantPool.java @ 2011:dad31fc330cd
7001379: bootstrap method data needs to be moved from constant pool to a classfile attribute
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Fri, 03 Dec 2010 15:53:57 -0800 |
| parents | 3b2dea75431e |
| children | 3582bf76420e |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 import sun.jvm.hotspot.utilities.*; | |
| 33 | |
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34 // A ConstantPool is an oop containing class constants |
| 0 | 35 // as described in the class file |
| 36 | |
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37 public class ConstantPool extends Oop implements ClassConstants { |
| 0 | 38 // Used for debugging this code |
| 39 private static final boolean DEBUG = false; | |
| 40 | |
| 41 protected void debugMessage(String message) { | |
| 42 System.out.println(message); | |
| 43 } | |
| 44 | |
| 45 static { | |
| 46 VM.registerVMInitializedObserver(new Observer() { | |
| 47 public void update(Observable o, Object data) { | |
| 48 initialize(VM.getVM().getTypeDataBase()); | |
| 49 } | |
| 50 }); | |
| 51 } | |
| 52 | |
| 53 private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { | |
| 54 Type type = db.lookupType("constantPoolOopDesc"); | |
| 55 tags = new OopField(type.getOopField("_tags"), 0); | |
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56 operands = new OopField(type.getOopField("_operands"), 0); |
| 0 | 57 cache = new OopField(type.getOopField("_cache"), 0); |
| 58 poolHolder = new OopField(type.getOopField("_pool_holder"), 0); | |
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59 length = new CIntField(type.getCIntegerField("_length"), 0); |
| 0 | 60 headerSize = type.getSize(); |
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61 elementSize = 0; |
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62 // fetch constants: |
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63 INDY_BSM_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_bsm_offset").intValue(); |
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64 INDY_ARGC_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argc_offset").intValue(); |
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65 INDY_ARGV_OFFSET = db.lookupIntConstant("constantPoolOopDesc::_indy_argv_offset").intValue(); |
| 0 | 66 } |
| 67 | |
| 68 ConstantPool(OopHandle handle, ObjectHeap heap) { | |
| 69 super(handle, heap); | |
| 70 } | |
| 71 | |
| 72 public boolean isConstantPool() { return true; } | |
| 73 | |
| 74 private static OopField tags; | |
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75 private static OopField operands; |
| 0 | 76 private static OopField cache; |
| 77 private static OopField poolHolder; | |
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78 private static CIntField length; // number of elements in oop |
| 0 | 79 |
| 80 private static long headerSize; | |
| 81 private static long elementSize; | |
| 82 | |
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83 private static int INDY_BSM_OFFSET; |
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84 private static int INDY_ARGC_OFFSET; |
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85 private static int INDY_ARGV_OFFSET; |
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86 |
| 0 | 87 public TypeArray getTags() { return (TypeArray) tags.getValue(this); } |
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88 public TypeArray getOperands() { return (TypeArray) operands.getValue(this); } |
| 0 | 89 public ConstantPoolCache getCache() { return (ConstantPoolCache) cache.getValue(this); } |
| 90 public Klass getPoolHolder() { return (Klass) poolHolder.getValue(this); } | |
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91 public int getLength() { return (int)length.getValue(this); } |
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92 |
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93 private long getElementSize() { |
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94 if (elementSize !=0 ) { |
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95 return elementSize; |
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96 } else { |
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97 elementSize = VM.getVM().getOopSize(); |
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98 } |
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99 return elementSize; |
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100 } |
| 0 | 101 |
| 102 private long indexOffset(long index) { | |
| 103 if (Assert.ASSERTS_ENABLED) { | |
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104 Assert.that(index > 0 && index < getLength(), "invalid cp index " + index + " " + getLength()); |
| 0 | 105 } |
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106 return (index * getElementSize()) + headerSize; |
| 0 | 107 } |
| 108 | |
| 109 public ConstantTag getTagAt(long index) { | |
| 110 return new ConstantTag(getTags().getByteAt((int) index)); | |
| 111 } | |
| 112 | |
| 113 public Oop getObjAt(long index){ | |
| 114 return getHeap().newOop(getHandle().getOopHandleAt(indexOffset(index))); | |
| 115 } | |
| 116 | |
| 117 public Symbol getSymbolAt(long index) { | |
| 118 return (Symbol) getObjAt(index); | |
| 119 } | |
| 120 | |
| 121 public int getIntAt(long index){ | |
| 122 return getHandle().getJIntAt(indexOffset(index)); | |
| 123 } | |
| 124 | |
| 125 public float getFloatAt(long index){ | |
| 126 return getHandle().getJFloatAt(indexOffset(index)); | |
| 127 } | |
| 128 | |
| 129 public long getLongAt(long index) { | |
| 130 int oneHalf = getHandle().getJIntAt(indexOffset(index + 1)); | |
| 131 int otherHalf = getHandle().getJIntAt(indexOffset(index)); | |
| 132 // buildLongFromIntsPD accepts higher address value, lower address value | |
| 133 // in that order. | |
| 134 return VM.getVM().buildLongFromIntsPD(oneHalf, otherHalf); | |
| 135 } | |
| 136 | |
| 137 public double getDoubleAt(long index) { | |
| 138 return Double.longBitsToDouble(getLongAt(index)); | |
| 139 } | |
| 140 | |
| 141 public int getFieldOrMethodAt(int which) { | |
| 142 if (DEBUG) { | |
| 143 System.err.print("ConstantPool.getFieldOrMethodAt(" + which + "): new index = "); | |
| 144 } | |
| 145 int i = -1; | |
| 146 ConstantPoolCache cache = getCache(); | |
| 147 if (cache == null) { | |
| 148 i = which; | |
| 149 } else { | |
| 150 // change byte-ordering and go via cache | |
| 151 i = cache.getEntryAt(0xFFFF & VM.getVM().getBytes().swapShort((short) which)).getConstantPoolIndex(); | |
| 152 } | |
| 153 if (Assert.ASSERTS_ENABLED) { | |
| 154 Assert.that(getTagAt(i).isFieldOrMethod(), "Corrupted constant pool"); | |
| 155 } | |
| 156 if (DEBUG) { | |
| 157 System.err.println(i); | |
| 158 } | |
| 159 int res = getIntAt(i); | |
| 160 if (DEBUG) { | |
| 161 System.err.println("ConstantPool.getFieldOrMethodAt(" + i + "): result = " + res); | |
| 162 } | |
| 163 return res; | |
| 164 } | |
| 165 | |
| 1602 | 166 public int[] getNameAndTypeAt(int which) { |
| 0 | 167 if (Assert.ASSERTS_ENABLED) { |
| 168 Assert.that(getTagAt(which).isNameAndType(), "Corrupted constant pool"); | |
| 169 } | |
| 170 int i = getIntAt(which); | |
| 171 if (DEBUG) { | |
| 172 System.err.println("ConstantPool.getNameAndTypeAt(" + which + "): result = " + i); | |
| 173 } | |
| 1602 | 174 return new int[] { extractLowShortFromInt(i), extractHighShortFromInt(i) }; |
| 0 | 175 } |
| 176 | |
| 177 public Symbol getNameRefAt(int which) { | |
| 1602 | 178 int nameIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[0]; |
| 0 | 179 return getSymbolAt(nameIndex); |
| 180 } | |
| 181 | |
| 182 public Symbol getSignatureRefAt(int which) { | |
| 1602 | 183 int sigIndex = getNameAndTypeAt(getNameAndTypeRefIndexAt(which))[1]; |
| 0 | 184 return getSymbolAt(sigIndex); |
| 185 } | |
| 186 | |
| 187 // returns null, if not resolved. | |
| 188 public Klass getKlassRefAt(int which) { | |
| 189 if( ! getTagAt(which).isKlass()) return null; | |
| 190 return (Klass) getObjAt(which); | |
| 191 } | |
| 192 | |
| 193 // returns null, if not resolved. | |
| 194 public InstanceKlass getFieldOrMethodKlassRefAt(int which) { | |
| 195 int refIndex = getFieldOrMethodAt(which); | |
| 196 int klassIndex = extractLowShortFromInt(refIndex); | |
| 197 return (InstanceKlass) getKlassRefAt(klassIndex); | |
| 198 } | |
| 199 | |
| 200 // returns null, if not resolved. | |
| 201 public Method getMethodRefAt(int which) { | |
| 202 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 203 if (klass == null) return null; | |
| 204 Symbol name = getNameRefAt(which); | |
| 205 Symbol sig = getSignatureRefAt(which); | |
| 206 return klass.findMethod(name, sig); | |
| 207 } | |
| 208 | |
| 209 // returns null, if not resolved. | |
| 210 public Field getFieldRefAt(int which) { | |
| 211 InstanceKlass klass = getFieldOrMethodKlassRefAt(which); | |
| 212 if (klass == null) return null; | |
| 213 Symbol name = getNameRefAt(which); | |
| 214 Symbol sig = getSignatureRefAt(which); | |
| 215 return klass.findField(name, sig); | |
| 216 } | |
| 217 | |
| 218 public int getNameAndTypeRefIndexAt(int index) { | |
| 219 int refIndex = getFieldOrMethodAt(index); | |
| 220 if (DEBUG) { | |
| 221 System.err.println("ConstantPool.getNameAndTypeRefIndexAt(" + index + "): refIndex = " + refIndex); | |
| 222 } | |
| 223 int i = extractHighShortFromInt(refIndex); | |
| 224 if (DEBUG) { | |
| 225 System.err.println("ConstantPool.getNameAndTypeRefIndexAt(" + index + "): result = " + i); | |
| 226 } | |
| 227 return i; | |
| 228 } | |
| 229 | |
| 230 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 231 public int getNameRefIndexAt(int index) { | |
| 1602 | 232 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 233 if (DEBUG) { |
| 1602 | 234 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 235 } |
| 1602 | 236 int i = refIndex[0]; |
| 0 | 237 if (DEBUG) { |
| 238 System.err.println("ConstantPool.getNameRefIndexAt(" + index + "): result = " + i); | |
| 239 } | |
| 240 return i; | |
| 241 } | |
| 242 | |
| 243 /** Lookup for entries consisting of (name_index, signature_index) */ | |
| 244 public int getSignatureRefIndexAt(int index) { | |
| 1602 | 245 int[] refIndex = getNameAndTypeAt(index); |
| 0 | 246 if (DEBUG) { |
| 1602 | 247 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): refIndex = " + refIndex[0]+"/"+refIndex[1]); |
| 0 | 248 } |
| 1602 | 249 int i = refIndex[1]; |
| 0 | 250 if (DEBUG) { |
| 251 System.err.println("ConstantPool.getSignatureRefIndexAt(" + index + "): result = " + i); | |
| 252 } | |
| 253 return i; | |
| 254 } | |
| 255 | |
| 1602 | 256 /** Lookup for MethodHandle entries. */ |
| 257 public int getMethodHandleIndexAt(int i) { | |
| 258 if (Assert.ASSERTS_ENABLED) { | |
| 259 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 260 } | |
| 261 int res = extractHighShortFromInt(getIntAt(i)); | |
| 262 if (DEBUG) { | |
| 263 System.err.println("ConstantPool.getMethodHandleIndexAt(" + i + "): result = " + res); | |
| 264 } | |
| 265 return res; | |
| 266 } | |
| 267 | |
| 268 /** Lookup for MethodHandle entries. */ | |
| 269 public int getMethodHandleRefKindAt(int i) { | |
| 270 if (Assert.ASSERTS_ENABLED) { | |
| 271 Assert.that(getTagAt(i).isMethodHandle(), "Corrupted constant pool"); | |
| 272 } | |
| 273 int res = extractLowShortFromInt(getIntAt(i)); | |
| 274 if (DEBUG) { | |
| 275 System.err.println("ConstantPool.getMethodHandleRefKindAt(" + i + "): result = " + res); | |
| 276 } | |
| 277 return res; | |
| 278 } | |
| 279 | |
| 280 /** Lookup for MethodType entries. */ | |
| 281 public int getMethodTypeIndexAt(int i) { | |
| 282 if (Assert.ASSERTS_ENABLED) { | |
| 283 Assert.that(getTagAt(i).isMethodType(), "Corrupted constant pool"); | |
| 284 } | |
| 285 int res = getIntAt(i); | |
| 286 if (DEBUG) { | |
| 287 System.err.println("ConstantPool.getMethodHandleTypeAt(" + i + "): result = " + res); | |
| 288 } | |
| 289 return res; | |
| 290 } | |
| 291 | |
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292 /** Lookup for multi-operand (InvokeDynamic) entries. */ |
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293 public short[] getBootstrapSpecifierAt(int i) { |
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294 if (Assert.ASSERTS_ENABLED) { |
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295 Assert.that(getTagAt(i).isInvokeDynamic(), "Corrupted constant pool"); |
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296 } |
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297 if (getTagAt(i).value() == JVM_CONSTANT_InvokeDynamicTrans) |
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298 return null; |
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299 int bsmSpec = extractLowShortFromInt(this.getIntAt(i)); |
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300 TypeArray operands = getOperands(); |
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301 if (operands == null) return null; // safety first |
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302 int basePos = VM.getVM().buildIntFromShorts(operands.getShortAt(bsmSpec * 2 + 0), |
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303 operands.getShortAt(bsmSpec * 2 + 1)); |
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304 int argv = basePos + INDY_ARGV_OFFSET; |
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305 int argc = operands.getShortAt(basePos + INDY_ARGC_OFFSET); |
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306 int endPos = argv + argc; |
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307 short[] values = new short[endPos - basePos]; |
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308 for (int j = 0; j < values.length; j++) { |
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309 values[j] = operands.getShortAt(basePos+j); |
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310 } |
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311 return values; |
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312 } |
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313 |
| 0 | 314 final private static String[] nameForTag = new String[] { |
| 315 }; | |
| 316 | |
| 317 private String nameForTag(int tag) { | |
| 318 switch (tag) { | |
| 319 case JVM_CONSTANT_Utf8: return "JVM_CONSTANT_Utf8"; | |
| 320 case JVM_CONSTANT_Unicode: return "JVM_CONSTANT_Unicode"; | |
| 321 case JVM_CONSTANT_Integer: return "JVM_CONSTANT_Integer"; | |
| 322 case JVM_CONSTANT_Float: return "JVM_CONSTANT_Float"; | |
| 323 case JVM_CONSTANT_Long: return "JVM_CONSTANT_Long"; | |
| 324 case JVM_CONSTANT_Double: return "JVM_CONSTANT_Double"; | |
| 325 case JVM_CONSTANT_Class: return "JVM_CONSTANT_Class"; | |
| 326 case JVM_CONSTANT_String: return "JVM_CONSTANT_String"; | |
| 327 case JVM_CONSTANT_Fieldref: return "JVM_CONSTANT_Fieldref"; | |
| 328 case JVM_CONSTANT_Methodref: return "JVM_CONSTANT_Methodref"; | |
| 329 case JVM_CONSTANT_InterfaceMethodref: return "JVM_CONSTANT_InterfaceMethodref"; | |
| 330 case JVM_CONSTANT_NameAndType: return "JVM_CONSTANT_NameAndType"; | |
| 1602 | 331 case JVM_CONSTANT_MethodHandle: return "JVM_CONSTANT_MethodHandle"; |
| 332 case JVM_CONSTANT_MethodType: return "JVM_CONSTANT_MethodType"; | |
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333 case JVM_CONSTANT_InvokeDynamic: return "JVM_CONSTANT_InvokeDynamic"; |
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334 case JVM_CONSTANT_InvokeDynamicTrans: return "JVM_CONSTANT_InvokeDynamic/transitional"; |
| 0 | 335 case JVM_CONSTANT_Invalid: return "JVM_CONSTANT_Invalid"; |
| 336 case JVM_CONSTANT_UnresolvedClass: return "JVM_CONSTANT_UnresolvedClass"; | |
| 1385 | 337 case JVM_CONSTANT_UnresolvedClassInError: return "JVM_CONSTANT_UnresolvedClassInError"; |
| 0 | 338 case JVM_CONSTANT_ClassIndex: return "JVM_CONSTANT_ClassIndex"; |
| 339 case JVM_CONSTANT_UnresolvedString: return "JVM_CONSTANT_UnresolvedString"; | |
| 340 case JVM_CONSTANT_StringIndex: return "JVM_CONSTANT_StringIndex"; | |
| 341 } | |
| 1385 | 342 throw new InternalError("Unknown tag: " + tag); |
| 0 | 343 } |
| 344 | |
| 345 public void iterateFields(OopVisitor visitor, boolean doVMFields) { | |
| 346 super.iterateFields(visitor, doVMFields); | |
| 347 if (doVMFields) { | |
| 348 visitor.doOop(tags, true); | |
| 349 visitor.doOop(cache, true); | |
| 350 visitor.doOop(poolHolder, true); | |
| 351 | |
| 352 final int length = (int) getLength(); | |
| 353 // zero'th pool entry is always invalid. ignore it. | |
| 354 for (int index = 1; index < length; index++) { | |
| 355 int ctag = (int) getTags().getByteAt((int) index); | |
| 356 switch (ctag) { | |
| 357 case JVM_CONSTANT_ClassIndex: | |
| 358 case JVM_CONSTANT_StringIndex: | |
| 359 case JVM_CONSTANT_Integer: | |
| 360 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 361 break; | |
| 362 | |
| 363 case JVM_CONSTANT_Float: | |
| 364 visitor.doFloat(new FloatField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 365 break; | |
| 366 | |
| 367 case JVM_CONSTANT_Long: | |
| 368 visitor.doLong(new LongField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 369 // long entries occupy two slots | |
| 370 index++; | |
| 371 break; | |
| 372 | |
| 373 case JVM_CONSTANT_Double: | |
| 374 visitor.doDouble(new DoubleField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 375 // double entries occupy two slots | |
| 376 index++; | |
| 377 break; | |
| 378 | |
| 1385 | 379 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 380 case JVM_CONSTANT_UnresolvedClass: |
| 381 case JVM_CONSTANT_Class: | |
| 382 case JVM_CONSTANT_UnresolvedString: | |
| 383 case JVM_CONSTANT_Utf8: | |
| 384 visitor.doOop(new OopField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); | |
| 385 break; | |
| 386 | |
| 387 case JVM_CONSTANT_Fieldref: | |
| 388 case JVM_CONSTANT_Methodref: | |
| 389 case JVM_CONSTANT_InterfaceMethodref: | |
| 390 case JVM_CONSTANT_NameAndType: | |
| 1602 | 391 case JVM_CONSTANT_MethodHandle: |
| 392 case JVM_CONSTANT_MethodType: | |
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393 case JVM_CONSTANT_InvokeDynamic: |
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394 case JVM_CONSTANT_InvokeDynamicTrans: |
| 0 | 395 visitor.doInt(new IntField(new NamedFieldIdentifier(nameForTag(ctag)), indexOffset(index), true), true); |
| 396 break; | |
| 397 } | |
| 398 } | |
| 399 } | |
| 400 /* | |
| 401 int length = getLength(); | |
| 402 for (int index = 0; index < length; index++) { | |
| 403 long offset = baseOffset + (index + typeDataBase.getOopSize()); | |
| 404 visitor.doOop(new IndexableField(index, offset, false), getObjAt(index)); | |
| 405 } | |
| 406 */ | |
| 407 } | |
| 408 | |
| 409 public void writeBytes(OutputStream os) throws IOException { | |
| 410 // Map between any modified UTF-8 and it's constant pool index. | |
| 411 Map utf8ToIndex = new HashMap(); | |
| 412 DataOutputStream dos = new DataOutputStream(os); | |
| 413 TypeArray tags = getTags(); | |
| 414 int len = (int)getLength(); | |
| 415 int ci = 0; // constant pool index | |
| 416 | |
| 417 // collect all modified UTF-8 Strings from Constant Pool | |
| 418 | |
| 419 for (ci = 1; ci < len; ci++) { | |
| 420 byte cpConstType = tags.getByteAt(ci); | |
| 421 if(cpConstType == JVM_CONSTANT_Utf8) { | |
| 422 Symbol sym = getSymbolAt(ci); | |
| 423 utf8ToIndex.put(sym.asString(), new Short((short) ci)); | |
| 424 } | |
| 425 else if(cpConstType == JVM_CONSTANT_Long || | |
| 426 cpConstType == JVM_CONSTANT_Double) { | |
| 427 ci++; | |
| 428 } | |
| 429 } | |
| 430 | |
| 431 | |
| 432 for(ci = 1; ci < len; ci++) { | |
| 433 int cpConstType = (int)tags.getByteAt(ci); | |
| 434 // write cp_info | |
| 435 // write constant type | |
| 436 switch(cpConstType) { | |
| 437 case JVM_CONSTANT_Utf8: { | |
| 438 dos.writeByte(cpConstType); | |
| 439 Symbol sym = getSymbolAt(ci); | |
| 440 dos.writeShort((short)sym.getLength()); | |
| 441 dos.write(sym.asByteArray()); | |
| 442 if (DEBUG) debugMessage("CP[" + ci + "] = modified UTF-8 " + sym.asString()); | |
| 443 break; | |
| 444 } | |
| 445 | |
| 446 case JVM_CONSTANT_Unicode: | |
| 447 throw new IllegalArgumentException("Unicode constant!"); | |
| 448 | |
| 449 case JVM_CONSTANT_Integer: | |
| 450 dos.writeByte(cpConstType); | |
| 451 dos.writeInt(getIntAt(ci)); | |
| 452 if (DEBUG) debugMessage("CP[" + ci + "] = int " + getIntAt(ci)); | |
| 453 break; | |
| 454 | |
| 455 case JVM_CONSTANT_Float: | |
| 456 dos.writeByte(cpConstType); | |
| 457 dos.writeFloat(getFloatAt(ci)); | |
| 458 if (DEBUG) debugMessage("CP[" + ci + "] = float " + getFloatAt(ci)); | |
| 459 break; | |
| 460 | |
| 461 case JVM_CONSTANT_Long: { | |
| 462 dos.writeByte(cpConstType); | |
| 463 long l = getLongAt(ci); | |
| 464 // long entries occupy two pool entries | |
| 465 ci++; | |
| 466 dos.writeLong(l); | |
| 467 break; | |
| 468 } | |
| 469 | |
| 470 case JVM_CONSTANT_Double: | |
| 471 dos.writeByte(cpConstType); | |
| 472 dos.writeDouble(getDoubleAt(ci)); | |
| 473 // double entries occupy two pool entries | |
| 474 ci++; | |
| 475 break; | |
| 476 | |
| 477 case JVM_CONSTANT_Class: { | |
| 478 dos.writeByte(cpConstType); | |
| 479 // Klass already resolved. ConstantPool constains klassOop. | |
| 480 Klass refKls = (Klass) getObjAt(ci); | |
| 481 String klassName = refKls.getName().asString(); | |
| 482 Short s = (Short) utf8ToIndex.get(klassName); | |
| 483 dos.writeShort(s.shortValue()); | |
| 484 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 485 break; | |
| 486 } | |
| 487 | |
| 488 // case JVM_CONSTANT_ClassIndex: | |
| 1385 | 489 case JVM_CONSTANT_UnresolvedClassInError: |
| 0 | 490 case JVM_CONSTANT_UnresolvedClass: { |
| 491 dos.writeByte(JVM_CONSTANT_Class); | |
| 492 String klassName = getSymbolAt(ci).asString(); | |
| 493 Short s = (Short) utf8ToIndex.get(klassName); | |
| 494 dos.writeShort(s.shortValue()); | |
| 495 if (DEBUG) debugMessage("CP[" + ci + "] = class " + s); | |
| 496 break; | |
| 497 } | |
| 498 | |
| 499 case JVM_CONSTANT_String: { | |
| 500 dos.writeByte(cpConstType); | |
| 501 String str = OopUtilities.stringOopToString(getObjAt(ci)); | |
| 502 Short s = (Short) utf8ToIndex.get(str); | |
| 503 dos.writeShort(s.shortValue()); | |
| 504 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 505 break; | |
| 506 } | |
| 507 | |
| 508 // case JVM_CONSTANT_StringIndex: | |
| 509 case JVM_CONSTANT_UnresolvedString: { | |
| 510 dos.writeByte(JVM_CONSTANT_String); | |
| 511 String val = getSymbolAt(ci).asString(); | |
| 512 | |
| 513 Short s = (Short) utf8ToIndex.get(val); | |
| 514 dos.writeShort(s.shortValue()); | |
| 515 if (DEBUG) debugMessage("CP[" + ci + "] = string " + s); | |
| 516 break; | |
| 517 } | |
| 518 | |
| 519 // all external, internal method/field references | |
| 520 case JVM_CONSTANT_Fieldref: | |
| 521 case JVM_CONSTANT_Methodref: | |
| 522 case JVM_CONSTANT_InterfaceMethodref: { | |
| 523 dos.writeByte(cpConstType); | |
| 524 int value = getIntAt(ci); | |
| 525 short klassIndex = (short) extractLowShortFromInt(value); | |
| 526 short nameAndTypeIndex = (short) extractHighShortFromInt(value); | |
| 527 dos.writeShort(klassIndex); | |
| 528 dos.writeShort(nameAndTypeIndex); | |
| 529 if (DEBUG) debugMessage("CP[" + ci + "] = ref klass = " + | |
| 530 klassIndex + ", N&T = " + nameAndTypeIndex); | |
| 531 break; | |
| 532 } | |
| 533 | |
| 534 case JVM_CONSTANT_NameAndType: { | |
| 535 dos.writeByte(cpConstType); | |
| 536 int value = getIntAt(ci); | |
| 537 short nameIndex = (short) extractLowShortFromInt(value); | |
| 538 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 539 dos.writeShort(nameIndex); | |
| 540 dos.writeShort(signatureIndex); | |
| 541 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 542 + ", type = " + signatureIndex); | |
| 543 break; | |
| 544 } | |
| 1602 | 545 |
| 546 case JVM_CONSTANT_MethodHandle: { | |
| 547 dos.writeByte(cpConstType); | |
| 548 int value = getIntAt(ci); | |
| 549 short nameIndex = (short) extractLowShortFromInt(value); | |
| 550 short signatureIndex = (short) extractHighShortFromInt(value); | |
| 551 dos.writeShort(nameIndex); | |
| 552 dos.writeShort(signatureIndex); | |
| 553 if (DEBUG) debugMessage("CP[" + ci + "] = N&T name = " + nameIndex | |
| 554 + ", type = " + signatureIndex); | |
| 555 break; | |
| 556 } | |
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557 |
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558 case JVM_CONSTANT_InvokeDynamicTrans: |
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559 case JVM_CONSTANT_InvokeDynamic: { |
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560 dos.writeByte(cpConstType); |
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561 int value = getIntAt(ci); |
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562 short bsmIndex = (short) extractLowShortFromInt(value); |
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563 short nameAndTypeIndex = (short) extractHighShortFromInt(value); |
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564 dos.writeShort(bsmIndex); |
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565 dos.writeShort(nameAndTypeIndex); |
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566 if (DEBUG) debugMessage("CP[" + ci + "] = indy BSM = " + bsmIndex |
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567 + ", N&T = " + nameAndTypeIndex); |
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568 break; |
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569 } |
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570 |
| 1385 | 571 default: |
| 572 throw new InternalError("unknown tag: " + cpConstType); | |
| 0 | 573 } // switch |
| 574 } | |
| 575 dos.flush(); | |
| 576 return; | |
| 577 } | |
| 578 | |
| 579 public void printValueOn(PrintStream tty) { | |
| 580 tty.print("ConstantPool for " + getPoolHolder().getName().asString()); | |
| 581 } | |
| 582 | |
| 583 public long getObjectSize() { | |
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584 return alignObjectSize(headerSize + (getLength() * getElementSize())); |
| 0 | 585 } |
| 586 | |
| 587 //---------------------------------------------------------------------- | |
| 588 // Internals only below this point | |
| 589 // | |
| 590 | |
| 591 private static int extractHighShortFromInt(int val) { | |
| 1602 | 592 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 593 return (val >> 16) & 0xFFFF; |
| 594 } | |
| 595 | |
| 596 private static int extractLowShortFromInt(int val) { | |
| 1602 | 597 // must stay in sync with constantPoolOopDesc::name_and_type_at_put, method_at_put, etc. |
| 0 | 598 return val & 0xFFFF; |
| 599 } | |
| 600 } |